http://www.laox.co.jp/images/shop_list/map/akibamap.jpg
AsobitG(ame). Five minutes from Akiba Stn, tops. Across from Sofmap more or less, down the main stip half a block from Club Sega (but on the opposite Side of Chuo-Dori).
Oh, and for those of you asking, shipping is dirt cheap if sent as...